Rolex Explorer II RARE Factory Service Dial | Ref. 16550 | 8.45M Serial (1984)

Specifications

Condition

Please review all photos for the most accurate representation of condition. Light wear consistent with age may be present. The dial is a Rolex factory service replacement, ensuring long-term durability and clean visual presentation. The watch functions as intended with smooth winding and precise timekeeping.

About This Watch

The Rolex Explorer II 16550 is one of the most important transitional models in Rolex history, blending vintage character with early signs of the modern Explorer II design. Produced for a short period in the mid-1980s, the 16550 introduced a number of significant upgrades to the Explorer line, making it a highly collectible reference today. This example features the black factory service dial, an official Rolex replacement that preserves authenticity while offering a crisp, clean appearance. The luminous hands and markers provide excellent legibility, and the dial layout remains faithful to the iconic Explorer II aesthetic. Powered by the Rolex Caliber 3085, the 16550 offers independently adjustable hour-hand functionality—an early evolution of the modern GMT-style feature. The 40mm stainless steel case delivers excellent wrist presence while maintaining classic proportions. The fixed 24-hour steel bezel is designed for easy readability and durability, and the sapphire crystal brings a more modern feel compared to earlier acrylic models. The 16550 has earned strong collector interest for its rarity, transitional details, and dependable construction. Whether worn daily or added to a curated collection, it represents one of the most meaningful Explorer II references ever produced. Condition: Please review all photos for the most accurate representation of condition. Light wear consistent with age may be present. The dial is a Rolex factory service replacement, ensuring long-term durability and clean visual presentation. The watch functions as intended with smooth winding and precise timekeeping. Technical Data Reference: 16550 Case Diameter: 40 mm Case Material: Stainless steel Bezel: Fixed 24-hour stainless steel bezel Dial: Black Rolex Factory Service Dial Crystal: Sapphire Water Resistance: 100 meters (factory rating) Movement: Rolex Caliber 3085 Movement Type: Automatic GMT Function: Independently adjustable hour hand Power Reserve: Approx. 48 hours